/* about-us区域 */
.about-us>div{
    margin-top: 94px;
    position: relative;
}
/* 关于我们的top的内容 */
.about-us .top .content{
    margin-top: 42px;
    text-align: center;
    line-height: 28px;
}
/* 压线标题组件宽180px */
.line-ball-title{
    line-height: 30px;
    width: 180px;
    text-align: center;
    background-color: #ffffff;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-80%);
}